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Save image from URL by paperclip
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This is the most performant answer (by far). I am not really a performance-geek, but this really adds up if you are working w/ large files.
– Chip
Sep 23 '13 at 23:50
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Use of Application.DoEvents()
...s() is definitely not easy to grok.
Right off the bat: almost any Windows Forms program actually contains a call to DoEvents(). It is cleverly disguised, however with a different name: ShowDialog(). It is DoEvents() that allows a dialog to be modal without it freezing the rest of the windows in t...
Are GUID collisions possible?
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Down vote because, in principle (in it's rawest form), you are wrong saying "no" to the question "Are GUID collisions possible?". It's very possible. The likelihood of which is tiny, but it's possible. I hate to sound pedantic - but SO is all about being concise and accura...
Case insensitive 'in'
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Prefer to lower all keys when building the dict, for performance reasons.
– Ryan
May 1 '13 at 6:27
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machine learning libraries in C# [closed]
... really isn't that good a choice. They don't use partial classes for their forms (makes it hard to read the code behind their samples), and i can't find decent documentation for it.
– RCIX
Oct 26 '09 at 10:58
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What is the difference between a string and a byte string?
...i see the comments above - sure they're stored in memory somehow, but that form is explicitly abstracted away. Indeed, these days, it can change during the lifetime of a program and be different between different strings or might even be more than one (some encodings are cached), depending on the ch...
How do I split a string so I can access item x?
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@FactorMystic First Normal Form requires that you not put multiple values in a single field. It's literally the first rule of an RDBMS. A SPLIT() function is not supplied because it encourages poor database design, and the database will never be optimi...
Why does NULL = NULL evaluate to false in SQL server
...ually means is "no data". That might be used to represent the case where information is not known, but it is actually more likely to be used to indicate that something doesn't exist. To continue your example: What is Frank's middle name? He doesn't have one (null). What is Shirley's middle name? She...
Bash script to calculate time elapsed
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You can use Bash's time keyword here with an appropriate format string
TIMEFORMAT='It takes %R seconds to complete this task...'
time {
#command block that takes time to complete...
#........
}
Here's what the reference says about TIMEFORMAT:
The value of this param...
How to change line color in EditText
...ed that, if you use the appcompat library EdtiTexts are automatically transformed into AppCompatEditText and the background tint applied.
– stephane k.
Apr 30 '17 at 17:03
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